Liquid soap dispenser



Sept. 22, 1953 D. T. MOWBRAY 2,652,952 LIQUID SOAP DISPENSER Filed Jan. 26, 1952 2 Sheets-Sheet l ULA H! Sept. 22, 1953 D. T. MOWBRAY LIQUID SOAP DISPENSER 2 Sheets-Sheet 2 Filed Jan. 26, 1952 Qvm/ X726 6 Qlwei W Patented Sept. 22, 1953 UNITED STATES PATENT OFFICE LIQUID SOAP DISPENSER Douglas T. Mowbray, Waterloo, Iowa Application January 26, 1952, Serial No. 268,380

15 Claims.

My invention relates to improvements in dispensing devices for liquids and the like and more particularly to a non-refillable liquid container for use therewith.

The disclosures hereinafter made relative to the liquid container and its cooperation with the dispenser apparatus represent an improvement over the liquid soap dispenser device disclosed in my Patent No. 2,628,744, issued Feb. 17, 1953.

In the manufacture and sale of dispensing devices such as for lubricants, liquid soap and the like, it has long been a practice in many instances that a particular dispensing apparatus is designed to dispense a particular brand of liquid material which is packaged in a suitable container for use with such apparatus. Quite generally the container bears a trade-mark name cetrifying to the character and quality of the material being dispensed so that the user has the assurance as to the identity of such material as represented. It is expected that when such containers are emptied, that they will be refilled with a liquid identical to that originally contained therein or a new like full container will be used to replace the depleted one. Such expectations on the part of manufacturers of dispensers and containers with a particular liquid therefore, is not without just cause as the assurance to the purchaser and user that he is receiving a particular brand of clean unadulterated liquid of the particular type, quality and character concerned is of primary importance.

The use of dispensers having easily refillable containers has made it possible for persons to refill the same with cheap and inferior liquids or fraudulent substitution of grades and brands that when done on containers carrying well established trade-marks and names, is in effect a fraud on the purchasers and users by the trading on the good will and reputation of the original contents of the container.

With the above observations in mind, it is the general aim of my invention to provide with a dispenser apparatus for liquids such as liquid soap and the like, a liquid container that cannot be refilled so that a new container must be used after the original has been emptied.

More specifically, the object of my invention is to provide a liquid dispensing device of the above class which is constructed to operate in cooperation only with an exclusive type of container and to thereby prevent unauthorized containers from being used therewith.

A further object of the invention is to provide 2 a container of standard proportions, but which is specifically equipped to be received by a dispensing apparatus, that will not successfully receive or support containers not similarly equipped.

Still a further object of this invention is to provide a liquid soap dispensing apparatus having the characteristics above described that will deposit a desired amount of liquid soap on the hands of the user without requiring the touching of the device by the hands.

A still further object of this invention is to provide a liquid soap dispenser and container therefor of the above class that is operated by the foot of the user.

A further object of this invention is to provide a liquid soap dispenser having an exclusive container as above described which can be quickly and easily attached to or removed therefrom.

These and other objects will be apparent to those skilled in the art.

My invention consists in the construction, arrangement, and combination of the various parts of the device, whereby the objects contemplated are attained as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which:

Fig. l is a perspective view of my new liquid soap foot operated dispenser,

Fig. 2 is a side elevational view of the container for liquid to be dispensed,

Fig. 3 is an enlarged longitudinal section view of the container taken on the line 33 of Fig. 2.,

Fig. 4 is an enlarged longitudinal section view of the dispenser apparatus with container attached,

Fig. 5 is a cross-sectional view taken on the line 5-5 of Fig. 4, and

Fig. 6 is a cross-sectional view taken on the line 6-6 of Fig. 4.

Referring to the drawings I have used the numeral It to designate a vertical base or plate member for my dispenser apparatus that is designed to be mounted on a wall 12 by any suitable means and preferably by screws it as illustrated in Fig. 1. Extending rearwardly at substantially right angles from the top portion of the base member I 0 and formed integrally therewith is a head section l6 which is provided with a vertical opening therethrough that varies in diameter at different points as I will now describe. This opening at the bottom portion of the head section l6 has the internal circumscribing threads It! as shown in Fig. 4 which are adapted to receive the threaded neck portion of any suitable standard size container 20. Above 3'. the threads it this opening" is concentrically reduced to form the horizontal annular shoulder 22 and vertical annular wall 24. A further concentrical reduction in the opening above the wall 22 forms the horizontal annular shoulder 26 and the resulting vertical annular wall 29 as shown in Fig. 4 which extends towards but not to the top of said head section. Above the upper limits of the wall 28 the opening is further concentrically reduced and extends upwardly therefrom through the top of the head section 16. H

A passageway 36 in the head section it communicates at one end with the vertical opening in said head section through the upperportion of the wall 28, and at its other end with the upper portion of base member It. A"manually operable valve means 32 may be conected to the passageway 33 as shown in Fig. 4. A conduit 34 extends vertically downwardly through the base it and communicates at its 'upperienu' with the'passageway 30. The numeral Q 36 designates j a soap dispensing conduit swiveliy arranged in the opening at the top of the headsec'tio'n by means of the nipple 38 and gland nut 48 as shown in Fig. 4. This conduit 36 extends rearwardly and upwardly a substantial distance'and then is curved to extend downwardly at its discharge or spout end (Fig. 1). 'By this'const'ruction,'any dripping of the liquid soap afterfusiiig this device is substantially eliminated, s'inceliquid in the conduit 36 will be carried by gravity away from the spout when this device is [not in operation. A resilient foot operated bellows or pump means His connected by the'flexible conduit 4% to the conduit 3 in the base it and a suitable valve means (not shown) is imposed in the bellows 32 in cooperation with conduit 4 Referring now to the container 28 as shown in Figs. 3 and 4 it has beenpreviously indicated that it is of the non-refillable type and this is accomplished by the following construction. The top of this container is enclosed and is provided .with a central opening in which I place the'oneway ball valve 48that is in' direct alignment with the lower end of the swivel conduit '36. A vertical tube member 58 communicates at its top with the valve 48 and extends downwardly'within the containerto the bottom thereof. It will be observed that the bottom of the tube 50 is angled as at 52 to afford a means of ingress'thereto for liquid 54 that is in the container. Thus constructed, liquid 54 can pass upwardly through the valve 58 as will be later described, but it will be impossible to refill the container by trying to pass liquid downwardly through the valve. The top of the neck of this container presents a corrugated outline in'longitudinal cross-section (Fig. 3) by an arrangement of ridges and a depression. This is accomplished by an outer peripheral annular ridge and by'a second annular ridge 58 reduced in size and concentrically arranged relative to ridge 56 which creates the annular depr'essions 60 and e2 with the depression 66 being intermediate the ridges '56 and 58 and the depression 62 being intermediate the ridge 58 and the valve 68. One or more openings 6t are made transversely through the ridge 53 and preferably I show two oppositely disposed-thereon relative to the center valve opening in the container. A suitable removable cap 66 is provided for the container when it is being stored or shipped or otherwise not connected to the dispenser when containing a liquid soap. y

In order to properly'seal the container when it is screwed into the dispenser, I provide the ill wall' 28, as shown in Fig. 4.

4 cylindrical shaped gasket 68 of rubber or the like} that is arranged within the head section [6 and engages the corrugated top of the container. This gasket is reduced in diameter at its upper portion which creates a shoulder so that it provides an air tight seal within the head [6 by engaging the wall 24, the shoulder 26 and the I The top of this gasket, however, will be spaced below the upper limits of the head section wall 28 to form the chamber 29. The bottom of this gasket 68 presentsasurface of alternating annular ridges and depressions similar to the neck of the container, but of such diameters that the respective ridges smaller ridge 'i2, the annular depression 14 inter-- mediate the ridges 'I'El'and '52, and the center depression T6. The gasket is provided with a transverse center opening or passageway 18 that terminates at the bottom in the depression 76 and oppositely disposed in the gasket relative to the center opening I8 and extending in the same direction as this opening are the two relatively small air passageways 8! that communicate at the bottom with the depression It will be observed that when this gasket is arranged within the headsection l6 and the container 23 is screwed therein as described and shown in Fig. 4, the depression! in thegask'et is constructed so as not to snugly engage the ridge 58 of the container wherebyaportion of the depression '14 becomes in effect an air chamber. It is with this chamber that the air passageways 823 communicate and it will be observed that the openings 64 in the ridge 58 of the container also communicate with this chamber as illustrated in Fig. 4.

A short conduit 82 that serves as a lower con- I tinuation of tubeSS; is frictionally secured withconduit 36 aiteru'se, and also prevents the remaining liquid in conduit 35 from draining out when the soap cartridge'isremoved or replaced.

Thus constructed and arranged, this dispenser will operate in the'iollowi'ng manner. Delivery of liquid soap atthe spout'end of conduit 35 is accomplished bydepressing the bellows 62 with the foot. When this is done, air is forced through conduit thence through passageway inoc-a e' am c ..*ug ai p pi s- 36 t h 111L159, henet io h r as a ways 89 in the gasket and thence through the openings 64 in 'the contai'ne'r to the interior of the container above the surface of the liquid 54.

The resulting pressure on the liquid will cause it to pass upwardly I 7 through the tube member 50, through the valves 43 and Er'iand out of the conduit 36. Upon'releas'e of pressure on the bellows, it will expand and relieve air pressure on the liquid within the container to stop movement of the liquid to the spout. Foranadditional supply of soap, the ac'tion"'above described is merely repeated. By adjustment of the valve 32, the

amount of liquid soap delivered at the spout can be easily adjusted.

It will be appreciated that the construction of the container 20 with the one-way ball valve 48 makes the container non-refillable so that once it is emptied, it must be discarded. To assure that a similar full container will be used to replenish the soap supply for reasons previously pointed out, it will be observed that the arrangement and cooperation between the container neck and gasket as disclosed and described is essential. By the arrangement of complementary alternating ridges and depressions in the container neck and gasket bottom, there is no leakage of air through the gasket into the container. To use any other type container against the corrugated gasket bottom would create enough air leakage to render the dispenser inoperable. It is further observed that the formation of the air chamber between the top of the depression 14 in the gasket and the top of the ridge 58 on the container makes it possible'to thread the container into the head section without having to align the passageways so with the openings 64. This is true since any air entering this chamber under pressure will travel therein until it reaches an escape point afforded by the openings 64. Thus, it is apparent that while the container may be of standard proportion and have a neck portion of a standard diameter, it is specially equipped and constructed to be received by the dispensing unit, which itself has features of a special nature so that it will not successfully receive or support containers not similarly equipped as herein described.

Some changes may be made in the construction and arrangement of my liquid soap dispenser without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claims, any modified forms of structure or use of mechanical equivalents which may be reasonably included within their scope.

I claim:

1. In a liquid soap dispenser, a base member, a head section secured to said base member, said head section provided with an opening therethrough, a cylindrical gasket in said opening, said gasket provided with a center opening concentrical with said head section opening, an air passageway through said gasket parallel to and spaced from said opening therein, a discharge conduit swivelly secured to said head section so that a portion thereof extends into said head section opening and into the center opening of said gasket, a liquid container capable of being removably attached to and solely supported by said head section, a tube member extending from the inside bottom of said container upwardly to the top thereof, a one-way valve in the top of said tube member, said one-way valve in communication with the center opening in said gasket, an air opening in said container in communication with the air passageway in said gasket, and a conduit in said base member communicating at one end with the air passageway in said gasket and at its other end designed to communicate with a source of forced air.

2. A device as defined in claim 1, with a oneway valve means disposed in the center opening of said gasket.

3. In a liquid soap dispenser, a base member, a head section secured to said base member, said head section provided with an opening therethrough, a cylindrical gasket in said opening, said gasket provided with a center opening concentrical with said head section opening, one end of said gasket presenting a surface of alternating concentrically arranged ridges and depressions, an air passageway through said gasket parallel to and spaced from said opening therein, a discharge conduit swivelly secured to said head section so that a portion thereof extends into said head section opening and into the center opening of said gasket, a liquid container capable of being removably attached to and solely supported by said head section, said container at its attaching point to said head section presenting a surface of alternating concentrically arranged ridges and depressions constructed so that the ridges on said container and gasket respectively will nest in depressions on the other to form an air tight seal therebetween, a tube member extending from the inside bottom of said container upwardly to the top thereof, a one-way valve in the top of said tube member, said one-way valve in communication with the center opening in said gasket, an air opening in said container in communication with the air passageway in said gasket, and a conduit in said base member communicating at one end with the air passageway in said gasket and at its other end designed to communicate with a source of forced air.

4. In a liquid soap dispenser, a base member, a head section secured to said base member, said head section provided with an opening therethrough, a cylindrical gasket in said opening, said gasket provided with a center opening concentrical with said head section opening, one end of .said gasket presenting a surface of alternating concentrically arranged ridges and depressions, a discharge conduit swivelly secured to said head section so that a portion thereof extends into said head section opening and into the center opening of said gasket, a liquid container capable of being removably attached to and solely supported by said head section, said container at its attaching point to said head section presenting a surface of alternating concentrically arranged ridges and depressions constructed so that the ridges on said container and gasket respectively will nest in depressions on the other to form an air tight seal therebetween and further constructed so that one ridge on said container does not occupy the entire area in depth of the corresponding depression in said gasket whereby an air chamber is formed, an air passageway through said gasket communicating with said air chamber, a tube member extending from the inside bottom of said container upwardly to the top thereof, a one-way valve in the top of said tube member, said one-way valve in communication with the center openin in said gasket, an air opening in one of the ridges in said container communicating with said air chamber, and a conduit in said base member communicating at one end with the air passageway in said gasket and at its other end designed to communicate .with a source of forced air.

5. In a dispensing apparatus for liquid soap and the like, a base member adapted to be mounted on a wall or similar support, a head section extending from said base member and provided with a vertical opening therethrough, said vertical opening being progressively larger from top to bottom by a series of steps and shoulders, a cylindrical gasket having progressively larger diameters from top to bottom by a series of steps and shoulders and adapted to be arranged within said vertical openings so as to be complementary with the steps and shoulders therein to form source 'of' forced" air.

aieiibioiia ,7 an "air tight seal, 'said "gasket provided with a central vertical 'opening fre'gisterin'g .With the openingin said head'se'ction'; an air passage'way through said gasket parallel toandspaced' from said opening therein, a'disch'arge conduit swivelly secured to said head sectionfls'o that a'portion thereof extends into"said'head section o ening and into the center opening of saidg'askea' a liquid container capable'of being removably attached to and solely supported by said head section, a tube member extending from the'insi'de bottom of said container upwardly to the top thereof, a one-wayvalve' in thetopf'of'said't'ube member, said one w'ayvalve in communication with the center opening in said gasketah air opening in said container incommunication with the ail-passageway i'n's'aid gasket, a'nda conduit in said base member communicating at one end withjtheair "passageway in said gasket "and 'at its other "end"designed to communicate with a 6. In a dispensing apparatus for liquid soap and the like, a base member adapted to be mounted on a wall or similar'support, a head section extending 'from "said base member and provided with avertical' opening therethrough, said vertical opening being progressively larger 'from top to bottom by a'series of steps and shoulders, 'a' cylindrical gasket having progressively larger diameters from top 'tob'otto'm by a series oisteps andsh'oulders'and adapted to be arranged"within said vertical openings so as to be" complementary with the steps and shoulders therein to form an air tight'seal, 'said "gasket provided with a central vertical opening regisftering' with the opening in said head'se'ction, the

larger end of said gasket presenting a surface of alternating concentrically arranged ridges and depressions; a discharge conduit swivelly secured to said head' section so' that a portion thereof extends into saidhead section opening and'into the central opening in said gasket, a liquid container removably attached toand solely supported by the bottom port'ion of the opening in said headsection,saidcoiitainrat its attaching point 'to' said head" section "presenting'a surface of alternating concentrically arranged ridges and' depressionsjconstructed "so that the ridges on said container and" gasketrespectively will nestin depressions on the'other'to form' an air tight seal thei'ebe'tween, w an air passageway through said gasket, anair'op'ening insaid container communic'ating'with' said air passageway, and a conduit'in said'base member communicating at one end with said air passageway and at the other end with asource of forced air, 7

'7. In a dispensing apparatus for liquid soap and the like, a base member adapted to be mounted on a wall" or similar support, a" head section extending from said base member and provided with a'vertical opening 'therethrough, said vertical opening being progressively larger from top to bottom by'a series or steps and shoulders, a cylindrical gasket-havingprogressively larger diameters from top to bottom by a series oi stepsand shoulders and' adapted to be arranged within said vertical-openingsso' as to be complementary withthe'steps and shoulders therein to form an air tightseal, sa'id gasket provided with a' cent'ral vertical op'eningregis- 'tering with the'o ening-in sal d head'stion, the

larger end of *said gasket 'p'res'eiiting asurface of alternating concentrically arranged ridges and depress ens; a discharge cohcluit""swivelly secur'ed*to"said head sctiori so 'thata portion:

,8 thereofextends into' said head section opening and into the central opening in said gasket, a liquid'container removably attached to and solely'supported by the'bottom portion of the opening in said head section, said container at its attaching point to said head section presenting a 'surfa'ce of alternating concentrically arranged ridges'an'd depressions constructed so that the ridges on'said container and gasket respectively will'nest in depressions on the other to form an airtight sealtherebetween, and further con- *structed so that one ridge on said container does notoccup'y the entire area in depth of'the corresponding depression in said gasket whereby ana'ir chamber is formed, an 'air passageway through said gasket communicating with said'air chamber, anair opening through one of the 'ridges in said container communicating with said air chamber, and 'a conduit in said base membercoznmunicating at one end 'withxsaidair passageway and atthe other end with a source of fo'r'ced air.

8. In a dispensing apparatus for liquid soap andthe like, a base member 'adapted'to be mounted on a wall or similar support, a head sides, and the top of said gasket being spaced from'the uppermost'shoulder within the head section opening to form an air chamber, said gasket provided with a central vertical opening registering with the opening in said head sec tion, an air passageway through said gasket parallel to and spaced from said opening therein, a discharge conduit swivelly secured to 'said head section so that a portion thereof-extends into said head section opening and into the center opening of said gasket, a liquid container capable of being removably attached to and solely supported by said head section, a tube member extending from the inside bottom of said container upwardly to the top thereof, a one-way valve in the top of said tube member, saidone-way valve in communication with the center opening in said gasket, an air opening in said container in communication with the 1 air passageway in said gasket, and a conduit in provided with a vertical opening therethrough,

said vertical opening being progressively larger from top to bottom by a series of steps and shoulders, a cylindrical gasket having progressively larger diameters from top to bottom by a series of steps and shoulders and adapted to be arranged within said vertical openings so as -to be complementary with the steps and shoulders therein to form an air tight seal at the sides, and the top of said gasket being spaced from the uppermost shoulder within the head section opening-to form-an air chamben-said; gasket provided with a central vertical opening registering with the opening in said head section, the larger end of said gasket presenting a surface of alternating concentrically arranged ridges and depressions, a discharge conduit swivelly secured to said head section so that a portion thereof extends into said head section opening and into the central opening in said gasket, a liquid container removably attached to and solely supported by the bottom portion of the opening in said head section, said con tainer at its attaching point to said head section presenting a surface of alternating concentrically arranged ridges and depressions constructed so that the ridges on said container and gasket respectively will nest in depressions on the other to form an air tight seal therebetween, an air passageway through said gasket, an air opening in said container communicating with said air passageway, and a conduit in said base member communicating at one end with said air chamber and at the other end with a source of forced air.

10. In a dispensing apparatus for liquid soap and the like, a base member adapted to be mounted on a wall or similar support, a head section extending from said base member and provided with a vertical opening therethrough, said vertical opening being progressively larger from top to bottom by a series of steps and shoulders, a cylindrical gasket having progressively larger diameters from top to bottom by a series of steps and shoulders and adapted to be arranged within said vertical openings so as to be complementary with the steps and shoulders therein to form an air tight seal at the sides, and the top of said gasket being spaced from the uppermost shoulder within the head section to form an air chamber, said gasket provided with a central vertical opening registering with the opening in said head section, the larger end of said gasket presenting a surface of alternating concentrically arranged ridges and depressions, a discharge conduit swivelly secured to said head section so that a portion thereof extends into said head section opening and into the central opening in said gasket, a liquid container removably attached to and solely supported by the bottom portion of the opening in said head section, said container at its attaching point to said head section presenting a surface of alternating concentrically arranged ridges and depressions constructed so that the ridges on said container and gasket respectively will nest in depressions on the other to form an air tight seal therebetween, and further constructed so that one ridge on said container does not occupy the entire area in depth of the corresponding depression in said gasket whereby an air chamber is formed, an air passageway through said gasket communicating at one end with said first mentioned air chamber and at its other end with said second mentioned air chamber, an air opening through one of the ridges in said container communicating with said second mentioned air chamber, and a conduit in said base member communicating at one end with said first mentioned air chamber.

11. In a dispensing apparatus for liquid soap and the like, a base member adapted to be mounted on a wall or similar support, a head section extending from said base member and pro vided with a vertical opening therethreugh, said vertical opening being progressively larger from top to bottom by a series of steps and shoulders, a cylindrical gasket having progressively larger diameters from top to bottom by a series of steps and shoulders and adapted to be arranged within said vertical openings so as to be complementary with the steps and shoulders therein to form an air tight seal at the sides and the top of said gasket being spaced from the uppermost shoulder within the head section opening to form an air chamber, said gasket provided with a central vertical opening registering with the opening in said head section, the larger end of said gasket prescnting a surface of alternating concentrically arranged ridges and depressions, a discharge conduit swivelly secured to said head section so that a portion thereof extends into said head section opening and into the central opening in said gasket, a liquid container removably attached U0 and solely supported by the bottom portion of the opening in said h ad section, said container at its attachin point to said head section presenting a surface of alternating concentrically arranged ridges and depressions constructed so that the ridges on said container and gasket respectively will nest in depressions on the other to form an air tight seal therebetween, and further constructed so that one ridge on said container does not occupy the entire area in depth of the corresponding depression in said gasket whereby an air chamber is formed, an air passageway through said gasket communicating at one end with said first mentioned chamber and at its other end with said second mentioned air chamber, an air opening in said container communicating with said second mentioned air chamber, and a conduit in said base member communicating at one end with said first men tioned air chamber and at the other end with a source of forced air.

12. A device as defined in claim 11 with a one-way valve means in the central opening of said gasket.

13. In a dispensing apparatus for liquid soap and the like having a head section provided with a vertical opening therethrough, said vertical opening being progressively larger from top to bottom by a series of steps and shoulders, a cylindrical gasket having progressively larger diameters from top to bottom by a series of steps and shoulders and adapted to be arranged within said vertical openings so as to be complementary with the steps and shoulders therein to form an air tight seal, said gasket provided with a central vertical opening registering with the opening in said head section, said gasket provided with an air passageway that communicates with the atmosphere, a liquid container capable of being removably attached to and solely supported by said head section, a tube member extending from the inside bottom of said container upwardly to the top thereof, a one-way valve in the top of said tube membe said one-way valve in communication with the center opening in said gasket, an air opening in said container in communication with the air passageway in said gasket, and a conduit in said base member communicating at one end with the air passageway in said gasket and at its other end designed to communicate with a source of forced air.

14. In a liquid soap dispenser having a head section provided with an opening therethrough, a cylindrical gasket in said opening, said gasket provided with a center opening concentrical with said head section opening, one end of said gasket presenting a surface of alternating concentrically arranged ridges and depressions, said gasket provided with an air passageway that communicates with the atmosphere, a liquid container capable of bein removably attached to and solely supported by said head section, said container at its attaching point to said head section presenting a surface of alternating concentrically arranged ridges and depressions constructed so that the ridges on said container and gasket respectively will nest in depressions on the other to form an air tight seal therebetween, a tube member extending from the inside bottom of said container upwardly to the top thereof, a one-Way valve in the top of said tube member, said one-way valve in communication with the center opening in said gasket, an air opening in said container in communication with the air passageway in said gasket, and a conduit in said base member communicating at one end with the air passageway in said gasket and at its other end designed to communicate with a source of forced air.

15. In a dispensing apparatus for liquid soap and the like having a head section provided with a vertical opening therethrough, said vertical opening being progressively larger from top to bottom by a series of steps and shoulders, a cylindrical asket having progressively larger diameters from top to bottom by a series of steps and shoulders and adapted to be arranged within said vertical openings so as to be complementary-with-the: steps and shouldersrtherein to form an airtight'seal at the sides;-.andthe.top of said gasket being spaced from. the uppermost shoulder within the head :sectionuopeningto.form an air chamber, said gasket providedwith a central vertical opening registering with the opening in said head section, said gasket-provided with an air passageway that communicates with said chamber, a liquid container capable ofbeing removably attached to andsolely supported by said head section, a tube'member extending from the inside bottom of :said container. upwardly to the top thereof, atone-way valve in theitop of said tube membensaidone-way valve incommunication with thecenter opening in said gasket, an air opening in said container in communication with the air passageway insaid-gasket and a conduit insa'id base member communicating at one endwith said air chamber and at its other end designed-to communicate with a source of forced air.

DOUGLAS T. MOWBRAY.

References Citedthe file of thispatent UNITEDZSTATES' PATENTS Number *Name Date 1,919,257 "Renzenhausen July 25, 1933 2,153,156 Pollnow Apr; 4, 1939 2,543,788 Loveland Mar. 6, 71951 

